Metal rolling mill



Jan. 1, 1924 1,479,552

F. MAGNEY METAL ROLLING MILL Filed July 18, 1921 2 Sheets-Sheet 1 wi'ravnu:

13 j} vdxl'n":

ML my, ha, W

Jan. 1,1924 1,479,552

. F. MAGNEY METAL ROLLING MILL Filed July 18. 1921 2 Sheets-Sheet 2 Patented Jan. 1, 1924..

siren ,srrns FRITZ MAGNET, OF ISERLO'HN, GERMANY.

METAL ROLLING- IMILL.

Application filed July 18,

To all whom it may concern: 7

Be itknown that 1, Farm MAGNEY, a citizen of the German Republic, and residing at Iserlohn, Germany, have invented certain new and useful Improvements in Metal Rolling Mills, of which the following is a specification.

This invention relates to a mechanical lifting device for the tables on either end of metal rolling-mills, by which, in the cheapest and simplest way, an automatic return of the metal plates to be rolled is effected from the back to the front table.

The accompanying drawing shows the improved device, as mounted on a rolling-mill, in Figs. 1 and 2 in a side view and plan view respectively. Figs. 3 to 12 show details.

The lifting device is driven from the top roll (as shown in the illustration) by a double-rim pulley 19 fastened on the journal 6 of said top roll. 7 represents the pullrope, which is wound several times loosely around the pulley 19 and which is connected at one end with a rope-pulley 8 and at the other end by hook 40, chain 20 and chainwheel 21 with a shaft 10. The latter is connected by chains 12 and 13 and chain-wheels 14 and 15 with chain-wheels 14 and 15 on shafts 11 and 16 respectively. Chainwvheels 22 and 23 on shaft 16 are connected by chains 32 and 33 with the front table 1 of the rolling-mill, which is pivoted at the end remote from the rolls. The back table 2 of the rolling-mill is connected at one end by chains 34 and 35 with chain-wheels 24 and 25 on shaft 10 and at the other end by chains 36 and 37 with chain-wheels 26 and 27 on shaft 11. Pulleys 8 and 9 are loose friction-pulleys and are mounted on a journal 38 supported in a bearing 39 fixed to one of the housings of the rolling-mill. The loose pulley 9 is continuously driven by a belt 50 from the double-rim pulley 19 keyed on the trunnion 6 of the upper roll.

Pulley 9 is slidable in the direction ofits axis and connected with a rod 47 by means of a double-pivotal link 48 in such a way that, upon said rod being raised, the pulley -9 is pressed against pulley 8 in such a way that the friction induced between them causes pulley 8 to participate in the rotation 1921. Serial No. 485,765.

of pulley 9, so that rope 7 thereon is pulled and shaft 10 is caused to rotate. Said raising of the rod 47 is eli'ected by means of a lever 49 fulcrumed at 46. Said lever 49 is connected at one end 53 with a footlever 3 and carries at its other end an adjustable counter-weight 51. The extent of the rotation of pulley 8' is controlled by means of a split-ring 43 fixed by means of a set-screw (not shown) in any desired position on the clrcumference of the pulley 8 and having its laterally projecting ends 45 connected by a screw 44, said ends 45 being adapted to abut against a fixed stop 28. Thereby, the desired lifting-height of the tables can be determined by a corresponding adjustment of the ring 43 on the pulley 8. In order to bring the tables as near to the rolls as possible, they are not lifted vertically but they swing by means of levers 29 and 30 on j ournals 31 and 41 that are fixed to one of tho housings of the rolling-mill.

The operation of the improved device is as follows :-The workman pushes the metal plate to be rolled from the front table 1 between the rolls, and, as soon as said metal plate has passed the rolls and arrived on the back table 2, the workman depresses the foot-lever 3. Thereby, the right-hand arm of lever 49 and thus the rod 47 are raised, so that the double-pivotal link 48 engages the friction pulleys 8 and 9. Thus, successively, pulley 8, chain-wheels 21, then 14 and .15, and finally chain-wheels 22, 23, 24, 25,

26 and 27, are caused to revolve, and the tables are thus lifted to the dotted positions 4 and 5. The rolled metal plate on the back table 5 then automatically slides over the top roll down to the front table 4. Then, the workman disengages the foot-lever 3, and owing to the counterweight 51, the right hand arm of lever 49 pulls down the rod 47, thus disengaging the double-pivotal link 48 and pulleys 8 and 9, while the tables drop back to their initial positions 1 and 2 owing to their own weight.

What I claim, is

In a mechanical lifting device for the front and rear tables on either side of rolling-mills, comprising an upper and a lower roll, the combination of ropes, chains and levers for lifting both tables to such inclined In testi nony whereof I have hereunto set positions that the metal plate to be rolled is my hand in the presence of two subscribing automatically returned over the upper roll Witnesses.

from the back to the front table, and means FRITZ MAGNEY. 5 for driving said device by the rolling-mill Witnesses:

itself, substantially as and for the purpose EMILLANQERBEIN,

set forth. FRITZ 'B6NNER. 

